But we're looking at wavelengths of light year to a few light years.

但我们看到的波长为 1 光年到几光年。

That was it. It was the light years.

就是这个，这就是光年。

The light year is a unit of distance.

光年是距离的单位。

Crickets in the grass I hear; Asters light the fading year.

我听到草地中蟋蟀的声音，紫菀花点亮了黯淡的一年。

A light year is about 9.4 trillion kilometers.

一光年约为9.4万亿公里。

A light year is about 9.5 trillion kilometers.

一光年约为9.5万亿公里。

They're billions of light years away.

它们在数十亿光年之外。

The team says It happened nearly 8 billion light years away.

研究小组表示，爆炸发生在近 80 亿光年之外。

In the distant 21st century, it was 2.5 million light years from Earth.

在遥远的21世纪，它距离地球 250 万光年。

A light year is the distance that light travels in one Earth year.

一光年是指光在真空中传播一年经过的距离。

The closest stellar-mass black star is about 6,000 light years from Earth.

最近的恒星质量黑洞距离地球约6000光年。

It is about 15 million light years from Earth.

它距离地球约1500万光年。

The planet is more than 100 light years away, too far to send a probe.

该行星距离我们有100多光年，这个距离太远，所以无法发射探测器。

As a reasonable guess, they might, on an average, be 100 light years away.

据合理推算，外星人离我们平均距离也有100光年之远。

A light year is the distance light travels in a year, about 9.5 trillion kilometers.

光年指光在一年中行进的距离，约为9.5万亿公里。

The molecules were discovered in a galaxy more than 12 billion light years from Earth.

这种分子是在一个距离地球超过120亿光年的星系中发现的。

They think it's coming from a galaxy that's about 500 million light years away.

他们认为它来自一个距离我们约5亿光年的星系。

One light year equals about 5. 8 trillion miles or 9. 5 trillion kilometers.

一光年大约等于 5.8 万亿英里或者说是 9.5 万亿千米。

Some are huge, like the one at our galaxy's center 26,000 light years from Earth.

有些黑洞非常巨大，比如距离地球26，000光年的银河系中心的黑洞。

If you've done much studying about space, you've probably heard the term 'light year'.

如果你学习过有关宇宙的知识，你可能听说过“光年”这个概念。